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Table 1 <br /> Groundwater Elevation and Analytical Data <br /> Former BP Retail Site No 11194 <br /> 2375 Tracy Blvd, Tracy, CA <br /> TOC Depth to Water Level Ethyl. Total <br /> Well Date P/ Elevation Water Elevation TPHg TPHd Benzene Toluene benzene Xylenes MtBE DO <br /> Number Sampled NP (feet msl) (feet bgs) (feet msl) (pg/L) (pg/L) (pg/L) WL) (Erg/L) (vg/L) (pg/L) (mg/L) Comments <br /> MW-2 10/4/1995 -- 2633 637 i 1996 210 — ND<1 0 ND<1 0 ND<1 0 ND<2 0 840 71 <br /> 1/4/1996 -- 2633 590 2043 3,900 — N0<25 ND<25 ND<25 ND<50 12,000 3 <br /> 3/29/1996 — — — — 11,000 — 374ND<5 <br /> 4 5 13,000 -- QC-1 <br /> 3/29/1996 — 2633 659 1974 9,200 — 34 3 4 12,000 36 <br /> 7/1/1996 -- 2633 716 1917 5,200 — 58 ND<1 ND<1 10,000 31 <br /> 10/15/1996 -- 2633 734 1899 N0<250 -- ND<2 5 ND<5 0 ND<5 0 14,000 4 <br /> 4/16/1997 — 2633 598 2035 180 — ND<0 5 ND<1 0 ND<1 0 57 42 <br /> 10/15/1997 — — — -- ND<50 — ND<O 5 ND<1 0 ND<1 0 ND<i 0 120 — QC-1 <br /> 10/15/1997 — 26 33 608 2025 ND<50 — ND<O 5 ND<1 0 ND<1 0 ND<1 0 120 54 <br /> 3/17/1998 -- 2633 557 2076 170 — ND<O 5 ND<1 0 ND<1 0 ND<1 0 180 61 <br /> 116!1999 — 2633 -- — — — — -- -- — <br /> 9/13/1999 -- 2633 561 2072 480 — 35 73 ND<5 0 ND<5 0 99,000191,000 -- <br /> 1/19/2000 -- 2633 561 2072 800 — 11 ND<0 5 ND<0 5 1 2 84,000 — <br /> 4/12/2000 — 26 33 613 2020 1,600 -- 42 ND<0 5 ND<O 5 ND<O 5 11,000 -- <br /> 7/22/2000 -- 2633 598 2035 3,800 — 63 086 063 72 90,000 — <br /> 10/26/2000 -- 2633 501 2132 1,100 -- 09 ND<0 5 ND<0 5 069 3,400 — <br /> 1/17/2001 — 2633 514 2119 18,000 — log ND<5 0 ND<5 0 ND<5 0 28 200 — <br /> 4/12/2001 -- 2633 581 2052 700 -- ND<0 5 ND<0 5 ND<0 5 ND<1 5 946 — <br /> 5/23/2001 — 2633 581 2052 1 100 — 0 594 ND<O 5 ND<0 5 ND<1 5 1,330 -- <br /> 7/3112001 — 2633 606 2027 1,600 -- 203 ND<5 0 ND<5 0 ND<15 1,490 — <br /> 10/30/2001 — 2633 612 2021 420 — 113 575 462 232 363 -- <br /> 1/29/2002 -- 26 33 557 2076 610 -- 865 ND<0 5 ND<0 5 ND<1 0 780 — <br /> 4/30/2002 — 26 33 568 2065 2,600 — 394 ND<0 5 506 811 2,140 — <br /> 7/30/2002 P 2633 491 2142 ND<500 — ND<0 5 ND<O 5 ND<0 5 ND<1 0 586 -- <br /> 10/31/2002 P 2633 576 2057 ND<50 — 27 1 3 ND<O 5 ND<0 5 13 — <br /> 01/30/2003 P 2633 576 2057 150 — 096 <0 50 <0 50 <0 50 79 -- <br /> 04/30/2003 P 2633 562 2071 67 — 88 <0 50 <0 50 <0 50 290 — <br /> 07/30/2003 P 2633 564 2069 480 -- 62 13 27 15 65 — <br /> 10/29/2003 P 2633 603 2030 <50 <0 50 <0 50 <0 50 <0 50 0 55 <br /> 01/26/2004 P 2633 584 2049 <50 — <0 50 <050 <0 50 <0 50 91 — <br /> 04/28/2004 P 2633 584 2049 <50 — <0 50 <050 <0 50 <0 50 <0 50 — Water Level data from <br /> 4127104 <br /> 07/30/2004 P 26 33 6 09 20 24 130 — 5 4 <0 50 <0 50 <0 50 <0 50 — <br /> Page 13 of 26 <br /> Report Date December 16,y 004 <br />